Because this is an SPDT thermostat

ensuring 100% compatibility with 3/4" 009M2 valve bodies

keeping the lead clear of burner interference

Technicians should look for visible swelling of the component or logic errors in the controller that only occur during the de-energization cycle of the inductive load

Carrier EF660015 Gas Valve Els PW 17895 Because this is an SPDTThe Carrier EF660015 Gas Valve Kit is a professional grade 24V single stage replacement designed for Carrier, Bryant, and Payne furnaces. This factory authorized kit features a White Rodgers 36J24 510 valve, providing 1 2" NPT inlet and outlet connections with a slow opening characteristic to ensure smooth ignition and stable flame performance. Pre set for 3. 5" W. C. natural gas operation, the kit includes a comprehensive LP conversion kit